Will a 96 Taurus 3.0 engine interchange with 2001 3.0?

No, a 1996 Taurus 3.0L engine will not directly interchange with a 2001 Taurus 3.0L engine. While both are 3.0L V6s, there are significant differences between the generation of engines. The engine management systems, sensors, and even some mounting points are likely incompatible. You'd need much more than just swapping the engine; you'd likely need to swap a significant portion of the wiring harness, computer, and potentially other components as well. The undertaking would be incredibly complex and likely not cost-effective.